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In light of the growing interest in sustainability in all fields of scientific research, the trend of using alternative materials such as eco-friendly additives to cement has become very important. Application of the environmental additives to concrete reduces the growing magnitude of pollutants or ...

In light of the growing interest in sustainability in all fields of scientific research, the trend of using alternative materials such as eco-friendly additives to cement has become very important. Application of the environmental additives to concrete reduces the growing magnitude of pollutants or non-recyclable waste materials and also gives hardness and durability to the mixture. Thousands of years ago, the ancient man resorted to making strong concrete mixtures to build civilizations that lasted until now. The most famous examples of this are those mixtures used in the construction of the Egyptian pyramids and the Great Wall of China. Environmental concrete additives are divided into natural additives such as bamboo, rice straw, tree residues, sheep’s wool, the remains of agricultural operations in general, and other unnatural additions such as demolition waste, reused stainless steel, as well as reused plastic and industrial wastes. The additional advantage of this approach is that the product will be economic and environmentally friendly. This field of research has become a target for a large sector of contracting companies, whether in the public or private sectors. In order to obtain a study worthy of publication in international journals and sounded in the scientific community, it is necessary to understand the mechanism of interaction between the components of cement admixtures by studying the mechanical properties and chemical resistance of the product, as well as the mixture rigidity and stability under the different weather conditions. Sustainable cement mixtures or modified cementitious concrete blended with the addition of nanomaterials are not only for construction but are now widely used in the stabilization of hazardous and radioactive wastes or radiation shielding.

In this special issue, we would like to get different perspectives from diverse researchers with different scientific backgrounds in chemistry, physics, medicine, agriculture, engineering, and economics to obtain new, effective and economical concrete composites that meet sustainability.

Building materials throughout the ages have been and are still very important in building civilizations as stated above. Man has developed the mixtures used for this purpose according to the surrounding environment and the available materials. Recently, with the deterioration of environmental and economic conditions and the development of scientific research in all fields, it has become important to search for environmentally friendly, economical, and effective materials to be used in construction, whether as alternatives to cement or as mixtures with cement so that they are also effective and perform the same role at least. Cement additives and sustainable building materials are one of the broadest fields of research, the researcher must fully characterize the mixture, whether through chemical resistance tests, testing physical and thermal properties, or exposing it to conditions that simulate weather conditions or chemicals to which the product may be exposed to understand the reaction mechanism between various condition with mixture components. It is also allowed to research the role of sustainable building materials and cement mixtures in the process of stabilizing hazardous materials and radioactive wastes.

All backgrounds and references are welcome as long as they contribute to creating ways that can develop this sector. The topic is not limited to sustainable cement mixtures additives and concrete mixtures for the building industry and to stabilize harmful and radioactive wastes.

Keywords: green building materials, stabilization radioactive waste, cement mixtures, radioactive waste management, hazard materials waste management, sustainability, sustainable stabilization, building materials from agricultural waste


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